Tube cutter



FIG. 1 is a perspective view showing my design.

FIG. 2 is a front view.

FIG. 3 is a back view.

FIG. 4 is a left side view.

FIG. 5 is a right side view.

FIG. 6 is a top view; and,

FIG. 7 is a bottom view. 

CLAIM The ornamental design for a tube cutter, as shown and described. 